Definition of chelate in English:

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Pronunciation: /ˈkēlāt/


A compound containing a ligand (typically organic) bonded to a central metal atom at two or more points.
Example sentences
  • Stability constants of organic chelates on mineral or metal surfaces are thought to approximate levels measured by solution chemistry.
  • Organic acids have been shown to increase the solubility of minerals and form strongly bound complexes and chelates with many metal cations.
  • Iron chelates also can be used for foliar application.


(Of an appendage) bearing chelae.
Example sentences
  • The specimen bears three chelate pereiopods, with the first much larger than the others.
  • The first chelate pereiopods of galatheoids are long and often much longer than the remainder of the pereiopods.


[with object] Chemistry
Form a chelate with.
Example sentences
  • When EDTA chelates the ions, the solution changes to the blue color of the indicator in alkaline solution.
  • EDTA chelates divalent cations and thus prevents the formation of the inactive complex.
  • It chemically captures, or chelates, excess iron but must be given intravenously or by injection.



Pronunciation: /kēˈlāSHən/
Example sentences
  • EDTA chelation was performed to remove the superficial calcium.
  • Product manufacturers have attempted to mimic this process by combining minerals with amino acids in the process of chelation.
  • This results in the release of acidic pectins and methanol as well as increased cell wall rigidity and calcium chelation.


Pronunciation: /-ˌlātər/
Example sentences
  • Studies with these ions and chelators confirm the predictions.
  • After the second blood sample had been collected, all patients had their iron chelation therapy switched to the other chelator.
  • Organic chelators that are thought to be of recent biological origin control copper speciation in seawater.
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